Kate, Duchess of Cambridge gives birth to a boy

The 36-year-old royal and her husband Prince William - who already have son Prince George, four, and two-year-old daughter Princess Charlotte - welcomed their third child into the world at 11.01am on Monday.

Kensington Palace announced: "Her Royal Highness The Duchess of Cambridge was safely delivered of a son at 1101hrs.

"The baby weighs 8lbs 7oz (about 3.8kg).

"The Duke of Cambridge was present for the birth.

"Her Royal Highness and her child are both doing well."

Both William and Catherine's families are "delighted" with the new addition to the household.

The statement concluded: "The Queen, The Duke of Edinburgh, The Prince of Wales, The Duchess of Cornwall, Prince Harry and members of both families have been informed and are delighted with the news."